Partial Page Reloading using JSF

Hi All,
can any one suggest me how can we implement PPR technique in java server faces. can any one give more insight on this technique.
Thanks in Advance.
Regards,
A.

Basically this has nothing to do with JSF. You just need to understand the AJAX techniques (asynchronous requests). This makes such behaviours possible. Finally look for an AJAX library for JSF and implement it.

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I am using JSF Tiles. In the body page i am trying to open a pop up page through java script. bt i got the 500 internal server error. The popup open properly when there is no html or core jsf tags. can anyone help me abt this problem.
Thanks.

For future JSP/Servlet related questions please use the JSP/JSTL forum or the Servlet forum. There are more experts.
As to your problem: did you read a basic JSP/Servlet book/tutorial? Did you read the [Tomcat documentation|http://tomcat.apache.org/tomcat-6.0-doc/index.html]? Your problem more sounds like you missed something trivial.

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Hi All,
I am new to Ajax, in my application i have to reload the page once i click on the link on a report column.
Another one is how to call "On load process" by clicking on the report link.
Can anybody help on this.
thanx
Madhu

implement page submit with AJAX instead of javascriptSome comments
<li>If you are submtting page, then you don't ajax coz you can do the processing in an Onsubmit PLSQL process
<li>The J in AJAX stands for "Javascript."
>
My requirement is on clicking on the report column i have to call one javascript and in javascript i am setting item value then submitting the page with doSubmit, then it will run the onload process based on the item value.
Again from onload process i am calling another javascript.
>
So "column link" -> "JS function" -> "SET Item" ->"Submit The Page" -> "on load process" ???
If you are on apex 4.0 ,you can use Dynamic Action for such things
<li> add a handler for the link column that can be used in identifying the link for instance
by adding to the link attributes(in column properties)
class="my_link"<li> Then add a Dynamic action that is fired when you click on the link
Dynamic Action Name : Anything you want
Triggering element type: jQuery Selector
jQuery Selector: a.my_link
   True Action 1: Type : Javascript
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What, if Any, partial page caching using ESI tags can be done in Portal V2 or with the PDK?

There is no PPC available through Portal in 902.
PPC will be available in 903/4.
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Hi all,
I am working on an application in which I have three inter-related tables ( Master-Detail-Detail ). I created two forms and one table from the datasources of these Master-Detail-Detail table. I added corresponding createInsert
and commit operations for each of my form and table on the JSF page. The tables have 3 colums one of which is generated by a sequence in the database. I am displaying that as an output text in my page. When I am creating the new row in that table it is not getting displayed till I reload the page by hitting the url. based on that value I should create the rows in the other tables.
The application should work in the below fashion
1. I should able to create a row in the first table using CreateInsert operation. ---> I am able to create and could see the row in the db
2. I should able to create a row in the second table which is child of first table. Dynamically it should take the value of one of the tables attribute for foreign key. ---> This is happening only if I reload the page manually by hitting
the url....but not happening if I dont reload it. I guess the Iterator is not getting refreshsed.
I need to reload the page either programmatically or using ADF Configuration. Please help me in doing that.
Thanks in Advance

Did you set up a composite relationship between the master and detail?
This should take care of automatically bringing in the right master id into new records you are creating in the detail part.
http://docs.oracle.com/cd/E16162_01/web.1112/e16182/bcentities.htm#sm0150
Also instead of doing a full page reload, it would probably be better to do a partial page refresh for the section you need to refresh.

Reduce Page reloading time using struts tiles.

Hello
How to reduce page reloading time using struts tiles.
Thanks
Ramki

Hi,
I've found the move from Struts to JSF pretty easy. I got stuck on using Struts-Tiles, however I found a solution.
I downloaded and started using Apache MyFaces. It has :
org.apache.myfaces.application.jsp.JspTilesViewHandlerImpl
which allowed me to leave everything pretty much as it was and move on.
Mission Accomplished.
Thanks for the link. Now added to the library.
Matthew

Event handler when using partial page refresh ?

Hi
I have a calendar, which uses partial page refresh. The problem is how to make javascript wait until the calendar has loaded and then do some updates on the calendar (after the user has pressed the next button that runs apex.widget.calendar.ajax_calendar('S','next');, for example ). I thought I could add "onreadystatechange" (or onload) event handler to the calendar like this: onreadystatechange="checkState()", where the function would check the state and if ready then do the updates. This doesn't work. Could somebody please tell me why not ?
Tiina

Hi,
It seems that ajax calendar missing event apexafterrefresh.
I do not know is this "bug" or just feature.
That event would be useful to your case , if I understand correct what you looking for.
For workaround , you can over write original function by placing this to calendar region footer
<script>
apex.widget.calendar.ajax_calendar=function(p_calendar_type, p_calendar_action, p_calendar_date, p_calendar_end_date){
var l_cal_type_field = $v('p_cal_type_field_id');
var l_cal_date_field = $v('p_cal_date_field_id');
var l_cal_end_date_field = $v('p_cal_end_date_field_id');
var l_cal_id = $v('p_calendar_id');
var l_calendar_region = 'calendar' + l_cal_id;
if ( p_calendar_type != 'C' ){
$s(l_cal_date_field,$v('p_calendar_date'));
}else{
if ( $v(l_cal_date_field) == '' ) {
   $s(l_cal_date_field,$v('p_calendar_date'));
if ( $v(l_cal_end_date_field) == '' ) {
   $s(l_cal_end_date_field,$v('p_calendar_end_date'));
// create and apex.ajax.widget object
var a = new apex.ajax.widget('calendar',function(){
/* start the return function */
if(p.readyState == 1){
   document.body.style.cursor = "wait";
}else if(p.readyState == 2){
}else if(p.readyState == 3){
}else if(p.readyState == 4){
   $x(l_calendar_region).innerHTML = p.responseText ;
   $s(l_cal_date_field,$v('p_calendar_date'));
   if (p_calendar_type == 'C') $s(l_cal_end_date_field,$v('p_calendar_end_date'));
   document.body.style.cursor = "";
/* DO HERE THINGS AFTER CALENDAR REFRESH */
}else{return false;}
// code for next,previous and today
if (p_calendar_type == 'S'){
p_calendar_type = $v('p_calendar_type');
}else{
$s(l_cal_type_field,p_calendar_type);
a.ajax.addParam('p_widget_mod',p_calendar_type);
a.ajax.addParam('p_widget_action',p_calendar_action);
a.ajax.addParam('x01',l_cal_id);
var lDate = (!!p_calendar_date && p_calendar_date !== '')?p_calendar_date:$v(l_cal_date_field);
if (p_calendar_type == 'C') {
var lendDate = (!!p_calendar_end_date && p_calendar_end_date !== '')?p_calendar_end_date:$v(l_cal_end_date_field);
a.ajax.add(l_cal_date_field,lDate);
if (p_calendar_type == 'C') a.ajax.add(l_cal_end_date_field,lendDate);
a.ajax.addParam('x02',lDate);
if (p_calendar_type == 'C') a.ajax.addParam('x05',lendDate);
a.ajax.add(l_cal_type_field,p_calendar_type);
a._get();
</script>Where I have comment *"do here things after calendar refresh"*, you can hook own scripts.
Of course this is not best way, but might help you till ajax calendar support dynamic actions fully
Regards,
Jari
Edited by: jarola on Oct 20, 2010 3:11 PM

JSF: partial page rendering is causing memory leak leading to outofmemory

JDeveloper 10.1.3.2.0
JDK: 1.6.0_06
Operating System: Windows XP.
I test my application for memory leaks. For that purpose, I use jconsole to monitor java heap space. I have an edit page that has two dependent list components. One displays all countries and the other displays cities of the selected country.
I noticed java heap space keeps growing as I change country from country list.
I run garbage collection and memory usage does not go down. If I keep changing the province for 5 minutes, then I hit a java heap space outofmemory exception.
To narrow down the problem, I removed the second city component and the problem still exists.
To narrow it down further, I removed autosubmit attribute from the country component and then memory usage stopped increasing as I change country.
country/city partial page rendering is just an example. I am able to reproduce the same problem on every page where i use partial page rendering. My conclusion is PPR is causing memory leak or at least the autosubmit attribute.
This is really bad. Anyone out there experienced same issue. Any help/advice is highly appreciated !!
Thanks
<af:panelLabelAndMessage
inlineStyle="font-weight:bold;"
label="Country:"
tip=" "
showRequired="true"
for="CountryId">
<af:selectOneChoice id="CountryId"
               valuePassThru="true"
               value="#{bindings.CountryId.inputValue}"
               autoSubmit="true"
               inlineStyle="width:221px"
               simple="true">
     <af:forEach var="item"
          items="#{bindings.CountriesListIterator.allRowsInRange}">
     <af:selectItem value="#{item.countryId}"
               label="#{item.countryName}"/>
     </af:forEach>
</af:selectOneChoice>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage
inlineStyle="font-weight:bold;"
label="City:"
tip=" "
showRequired="true"
for="CityId">
<af:selectOneChoice id="CityId"
               valuePassThru="true"
               value="#{bindings.CityId.inputValue}"
               partialTriggers="CountryId"
               autoSubmit="true"
               inlineStyle="width:221px"
               unselectedLabel="--Select City--"
               simple="true">
     <f:selectItems value="#{backing_CountryCityBean.citiesSelectItems}"/>
</af:selectOneChoice>
</af:panelLabelAndMessage>

Samsam,
I haven't seen this problem myself, no.
To clarify - are you seeing this behaviour when running your app in JDeveloper, or when running in an application server? If in JDeveloper, a copuple of suggestions:
* (may not matter, but...) It's not supported to run JDev 10g with JDK 6
* have you tried the [url http://www.oracle.com/technology/pub/articles/masterj2ee/j2ee_wk11.html]memory profiler
Best,
John

Using JSF in jsp segment page..

Hello
Is it possible to use JSF components in a JSP segment page(.jspf) ? I couldn't achive that..Let me explain:
I created a .jspf file and inserted these lines into it:
<f:view>
    <h:form id="loginform">
        <h:panelGrid columns="2">
            <h:outputLabel value="User:"/><h:inputText id="username_email"/>
            <h:outputLabel value="Password:"/><h:inputText id="password"/>
        </h:panelGrid>
    </h:form>
</f:view>after that i included this .jspf file to a jsp file. When I run the application,I get this error:
Stacktrace:
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     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
root cause
javax.servlet.ServletException: Cannot find FacesContext
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:858)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
     org.apache.jsp.index_jsp._jspService(index_jsp.java:181)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
root cause
javax.servlet.jsp.JspException: Cannot find FacesContext
     javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:405)
     com.sun.faces.taglib.jsf_core.ViewTag.doStartTag(ViewTag.java:105)
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     org.apache.jsp.index_jsp._jspService(index_jsp.java:113)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
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I have tried both:
logincontrol.jspf (1)
<f:subview id="sv">
    <h:form id="loginform">
        <h:panelGrid columns="2">
            <h:outputLabel value="User:"/><h:inputText id="username_email"/>
            <h:outputLabel value="Pass:"/><h:inputText id="password"/>
        </h:panelGrid>
    </h:form>
</f:subview>
logincontrol.jspf (2)
<f:view>
    <h:form id="loginform">
        <h:panelGrid columns="2">
            <h:outputLabel value="User:"/><h:inputText id="username_email"/>
            <h:outputLabel value="Pass:"/><h:inputText id="password"/>
        </h:panelGrid>
    </h:form>
</f:view>but nothing changes... i added this line, in the .jsp file:
<%@ include file="WEB-INF/jspf/logincontrol.jspf" %>   by the way, is it good to write a .jspf file for login process and include it to the pages?

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Hi,
My application is using MyFaces, RichFaces and Ajax4jsf. When i try to display error page configured in web.xml, i am getting exception "Error while processing error page".
my web.xml contents are as follows:
<?xml version="1.0"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<filter>
<display-name>RichFaces Filter</display-name>
<filter-name>richfaces</filter-name>
<filter-class>org.ajax4jsf.Filter</filter-class>
</filter>
<filter-mapping>
<filter-name>richfaces</filter-name>
<servlet-name>faces</servlet-name>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
<dispatcher>INCLUDE</dispatcher>
</filter-mapping>
<filter>
<filter-name>extensionsFilter</filter-name>
<filter-class>
org.apache.myfaces.webapp.filter.ExtensionsFilter
</filter-class>
<init-param>
<description>
set the size limit for uploaded files. Format: 10 - 10 bytes 10k
- 10 KB 10m - 10 MB 1g - 1 GB
</description>
<param-name>uploadMaxFileSize</param-name>
<param-value>100m</param-value>
</init-param>
<init-param>
<description>
Set the threshold size - files below this limit are stored in
memory, files above this limit are stored on disk.
Format: 10 - 10 bytes 10k - 10 KB 10m - 10 MB 1g - 1 GB
</description>
<param-name>uploadThresholdSize</param-name>
<param-value>100k</param-value>
</init-param>
</filter>
<filter>
<filter-name>Seam Redirect Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamRedirectFilter</filter-class>
</filter>
<filter>
<filter-name>KTServletFilter</filter-name>
<filter-class>com.kenexa.core.system.KTServletFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>extensionsFilter</filter-name>
<url-pattern>*.jsf</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>extensionsFilter</filter-name>
<url-pattern>/faces/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>Seam Redirect Filter</filter-name>
<url-pattern>*.jsf</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>KTServletFilter</filter-name>
<url-pattern>*.jsf</url-pattern>
</filter-mapping>

<listener>
<listener-class>org.jboss.seam.servlet.SeamListener</listener-class>
</listener>
<listener>
<listener-class>com.kenexa.kr.web.KRServletListener</listener-class>
</listener>
<servlet>
<servlet-name>faces</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>faces</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<error-page>
<exception-type>java.lang.Throwable</exception-type>
<location>/rc/systemError.jsf</location>
</error-page>
</web-app>
As per the configuration, when exception is thrown out of the application, container tries to display systemError.jsp page. If we want to include the JSF tags in systemError.jsp page, the request should pass through FacesServlet, so in the <error-page> <location> tag systemError page is specified with the extention systemError.jsf though it's actual extention is .jsp
When exception is thrown from the application container invoke the error page but, while rendering systemError.jsf page exception is thrown saying "Exception processing error page "systemError.jsp" "
To solve this problem i've gone through several forums, materials.
In one forum a guy said, JSF1.1 spec has some problem in displaying error pages. To solve this don't write <f:view> tags in the error page, use <f:subview> intstead. By reading this, i again changed the contents of systemError.jsp page replacing <f:view> by <f:subview>. But the error is still repeating.
Finally what i found is, when we use Ajax4jsf in the application, its AjaxViewRender class is throwing exception while rendering error pages configured through web.xml.
So what i did is i changed error page extention from .jsf to .jsp in the <location> tag. Now jsf won't come in the picture and remove JSF related tags from the systemError.jsp page.
<error-page>
<exception-type>java.lang.Throwable</exception-type>
<location>/rc/systemError.jsp</location>
</error-page>
Any comments are welcome----------------------------------------------------------------

I too iam facing the same problem could you advise if you have found any solutions
-Ram

How to use Partial Page Navigation

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